But when I check the steam folders, the save is there, the Default and my customed Pride 1997 also, my save file from the Modded Database is still there and hopefully working, but the game doesn't recognize these files or can't find them for whatever reason. It stopped working suddenly, my computer shut down because the lights went off in my house, then when I turn it on again the game isn't finding the save files, even though they are there.

I'm using windows 8, I believe the latest patch for WMMA 3, not sure how to check that.

A power cut can damage files and make them unusable. In the save folder you will see a Backup folder - you will need to move the file from in there "up one level" to replace your existing copy. This will restore you to the previous save point. If that does not work you would unfortunately need to abandon that save as there would not be any further data to work with.